The main function of optical fiber laser protection window is to protect the focusing lens, to prevent the lens from damage by the splashing objects. By periodic replacement of the protection window, the accuracy of processing can be ensured. The high damage threshold (>15J/cm2)@ 1064 nm AR coating on the window can effectively increase its transmittance , reduce the energy loss and improve the quality of the product being processed. It is widely used in laser cutting machine, laser welding machine and other laser equipment.

In order to protect the scanning lens from harming by spatter and other hazards in the workplace, we provides a protection window (also known as the anti fragmentation window) which can be provided either as a part of the scanning mirror component or can be sold individually. These windows are made of zinc selenide and germanium. The Znse protection window is coated with AR coating or DAR coating. Germanium protection window is coated with AR coating or optional diamond-like carbon coatings (DLC), which can be used in the worst industrial environment. The size listed are the ones used commonly.